56 lines
1.2 KiB
Bash
Executable file
56 lines
1.2 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -e
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(( $# > 0 )) || exit
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# Displays the time since $1 in a human readable format (e.g. 4h 25m 55s). If
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# given a file, the modified time is used. If $1 == "--", then this script acts
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# as a converter, converting $2 into human a readable format, e.g. since -- 72
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# #=> 1m 12s
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# TODO: A help fallback
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# TODO: Options parsing?
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# `date` on OSX does not have the --date parameter
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date=date
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if [[ $OSTYPE == darwin* ]]; then
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date=gdate
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elif ! command -v $date >/dev/null; then
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echo "Unsupported system"
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exit 1
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fi
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# If given a file, give time since last modification
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(( $# == 1 )) && [[ -f $1 ]] && arg=reference || arg=date
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if [[ $1 == -- ]]; then
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t="$2"
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else
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now=$($date +%s)
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then=$($date --$arg="$*" +%s)
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t=$(( now - then ))
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fi
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# Bash doesn't support floating point arithmetic like zsh does, therefore:
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bc <<EOF
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define abs(i) {
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if (i < 0) return (-i)
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return (i)
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}
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t = abs($t)
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weeks = t / 60 / 60 / 24 / 7
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days = t / 60 / 60 / 24 % 7
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hours = t / 60 / 60 % 24
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minutes = t / 60 % 60
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seconds = t % 60
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if (weeks > 0) print weeks, "w "
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if (days > 0) print days, "d "
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if (hours > 0) print hours, "h "
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if (minutes > 0) print minutes, "m "
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print seconds, "s"
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EOF
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